here in DFW, you can find plenty lf oak, both live oak and red oak. Red oak is very similar to hickory, IMO. Hickory is harder to find -- and sometimes red oak is sold as hickory.
You can get hickory chunks for a good price at Academy stores, and short "logs" there, too. Not a good bulk source.
Lots of pecan in East Texas, which is one of my favorites. Tons of it in Southeast Texas.
After a good springtime storm in the DFW area, there is a lot of oak available for free, if you have a saw and a strong back.